3Com SuperStack 3 NBX Administrator's Manual page 249

Figure 85 Add Group Dialog Box — BRI
Modifying a BRI Group
You may want to modify a Digital Line Card group to change its name,
Auto Extension assignments, or other parameters. When you modify a
group, the changes affect all of the Digital Line Cards assigned to that
group.
CAUTION: Modifying a BRI group disconnects any active calls on any
channels that are associated with the group.
To modify a BRI group:
1 On the Digital Line Cards tab, from the Select Device Type pull-down list,
select ISDN BRI Group List.
2 Click Apply.
3 Select the group that you want to modify.
4 Click Modify. The Modify Group dialog box (Figure 86) appears.
Configuring and Managing BRI-ST Digital Line Cards 249